My complaint is.
Littering on the beach. Too many people just throw their trash on the beach for someone else to clean up. Well no one will clean it up.It gets washed into the ocean where sea creatures can get to it. Then come along some innocent dolphins interested on whats lying in the ocean. They start playing with it and suddenly they get trapped in the trash. they could get badly hurt or even die. Just from people littering. So please any one whose reading this if you go to the beach any time soon. Don't litter and clean up other trash you see lying around.
Gravity is a natural phenomenon
or
Mirages are a common desert phenomenon
Each time a new social media app is revealed to the world it becomes a phenomenon for a while and then slowly fades into unimportance
If you don't understand a point made by a speaker, it is okay to C. Ask a question to help clarify their statement.